How to Grow Catmint 'Superba'

Young transplant with developing root system and initial leaf growth; plant is still compact with minimal branching.

Water regularly (2-3 times weekly) until established. Apply 1-2 inches of mulch around base. Pinch stem tips early to encourage bushiness.

Plant fills out with gray-green, finely textured foliage; multiple stems branch outward, creating a rounded mound; no flowers yet.

Water moderately, allowing soil surface to dry between waterings. Reduce watering frequency as plant matures. Optional: pinch back stems mid-spring to promote denser growth.

Dense spikes of small, tubular lavender-blue flowers appear at stem tips; blooms are highly attractive to bees and butterflies. Foliage remains aromatic and ornamental.

Deadhead spent flowers every 2-3 weeks to encourage continuous blooming and extend flowering season. Water deeply but infrequently; avoid wetting foliage. No fertilizer needed unless soil is poor.

After initial bloom period, plant may experience a brief rest before producing secondary flushes of flowers through late summer and fall. Foliage may look less dense mid-summer in hot climates.

Cut back one-third of stems after first heavy bloom to encourage bushier rebloom. Reduce watering in extreme heat. Mature plants require minimal care; drought stress is beneficial.

Foliage fades and flowers diminish in late fall; stems dry and become woody. Plant dies back partially or fully depending on zone and winter severity.

Allow foliage to remain on plant over winter for structure and insulation; cut back to 6-12 inches in early spring as new growth emerges. No watering needed. Remove dead material in spring.